A motel clerk counts his $10 bills and $20 bills at the end of the day. He finds that he has a total of 150 bills, and that those 150 bills have a total value of $2,000. How many $10 bills and $20 bills does the motel clerk have? Translate the problem into 2 equations.

Let the x be the number of $10 bills and y be the number of $20 bills.

100 $10 bills and

50 $20 bills

Step-by-step explanation:

Given

Required

Determine the number of $10 and $20 bills

.

This implies that:

This implies that:

So, the equations are:

Make x the subject in the first equation

Substitute 150 - y for x in the second

Recall that:

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